A simple org-mode viewer (that allows you to do some basic
folding/unfolding and search -- or even something more complex that
would allow you to view it as a mind-map?) would be nice. It could
even be simplified with more GUI bells and whistles and still allow
one to insert data and save the file. It would not be a full
replacement for emacs, ever, but would allow other less technical
users to use it as well.

There are all kinds of advantages to this, seems to me, and of course it partly exists in the form of Moblie Org. Org-mode is both an interface and a specification, you could say (as well as a friendly club). And you can work with the latter (the markup specification) apart from the former if you have need to. A web-app for viewing and editing org-mode files would open nice possibilities for collaboration with the not-yet-initiated and for using your files when you are away-from-emacs.

Scot